Molecular Mechanisms of Plant Trichome Development
TL;DR: A review of the molecular mechanisms underlying fate determination and initiation, elongation, and maturation of unicellular, bicellular and multicellular trichomes in several representative plants can be found in this paper .
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Abstract: Plant trichomes, protrusions formed from specialized aboveground epidermal cells, provide protection against various biotic and abiotic stresses. Trichomes can be unicellular, bicellular or multicellular, with multiple branches or no branches at all. Unicellular trichomes are generally not secretory, whereas multicellular trichomes include both secretory and non-secretory hairs. The secretory trichomes release secondary metabolites such as artemisinin, which is valuable as an antimalarial agent. Cotton trichomes, also known as cotton fibers, are an important natural product for the textile industry. In recent years, much progress has been made in unraveling the molecular mechanisms of trichome formation in Arabidopsis thaliana, Gossypium hirsutum, Oryza sativa, Cucumis sativus, Solanum lycopersicum, Nicotiana tabacum, and Artemisia annua. Here, we review current knowledge of the molecular mechanisms underlying fate determination and initiation, elongation, and maturation of unicellular, bicellular and multicellular trichomes in several representative plants. We emphasize the regulatory roles of plant hormones, transcription factors, the cell cycle and epigenetic modifications in different stages of trichome development. Finally, we identify the obstacles and key points for future research on plant trichome development, and speculated the development relationship between the salt glands of halophytes and the trichomes of non-halophytes, which provides a reference for future studying the development of plant epidermal cells.
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Citations
Cannabis sativa: origin and history, glandular trichome development, and cannabinoid biosynthesis.
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SDG26 Is Involved in Trichome Control in Arabidopsis thaliana: Affecting Phytohormones and Adjusting Accumulation of H3K27me3 on Genes Related to Trichome Growth and Development
TL;DR: Zhang et al. as mentioned in this paper found that the mutant of Arabidopsis (sdg26) possessed more trichomes on its rosette leaves compared to the wild type (Col-0), and the trichome density per unit area of sdg26 is significantly higher than that of Col-0.
GoSTR, a negative modulator of stem trichome formation in cotton.
Biyu Xu,Junge Zhang,Yue Shi,Fan Dai,Lisha Xuan,Ying He,Zhiyong Zhang,Jieqiong Deng,Tianzhen Zhang,Yuan Hu,Zhanfeng Si +10 more
TL;DR: In this paper , the authors reported that GoSTR functions as a master repressor for stem trichome formation, which was isolated by map-based cloning based on a large F2 segregating population derived from a cross between TM-1 (pubescent stem) and J220 (smooth stem).
5
Structural variation of GL1 gene determines the trichome formation in Brassica juncea
Yiqing Meng,Xiagolong Lyu,Jiaqi Liu,Wei Gao,Yuyuan Ma,Nanqiao Liao,Zhangping Li,Yongming Bo,Zhong Sheng Hu,Jinghua Yang,Mingfang Zhang +10 more
TL;DR: In this article , a 448-kb region on chromosome B02 was delimited to be associated with trichome trait in Brassica juncea, in which the BjuVB02G54610 gene with a structural variation of 3 kb structure variation encoding a MYB transcription factor was predicted as the possible candidate gene.
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